arch/arm/mach-omap2/board-2430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-2430sdp.c
   3  *
   4  * Copyright (C) 2006 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
   9  * Updated the Code for 2430 SDP : Syed Mohammed Khasim
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/delay.h>
  22 #include <linux/i2c/twl4030.h>
  23 #include <linux/err.h>
  24 #include <linux/clk.h>
  25 #include <linux/io.h>
  26
  27 #include <mach/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/flash.h>
  32
  33 #include <mach/gpio.h>
  34 #include <mach/mux.h>
  35 #include <mach/board.h>
  36 #include <mach/common.h>
  37 #include <mach/gpmc.h>
  38
  39 #include "mmc-twl4030.h"
  40
  41 #define SDP2430_CS0_BASE        0x04000000
  42 #define SDP2430_FLASH_CS        0
  43 #define SDP2430_SMC91X_CS       5
  44
  45 #define SDP2430_ETHR_GPIO_IRQ           149
  46
  47 static struct mtd_partition sdp2430_partitions[] = {
  48         /* bootloader (U-Boot, etc) in first sector */
  49         {
  50                 .name           = "bootloader",
  51                 .offset         = 0,
  52                 .size           = SZ_256K,
  53                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  54          },
  55         /* bootloader params in the next sector */
  56         {
  57                 .name           = "params",
  58                 .offset         = MTDPART_OFS_APPEND,
  59                 .size           = SZ_128K,
  60                 .mask_flags     = 0,
  61          },
  62         /* kernel */
  63         {
  64                 .name           = "kernel",
  65                 .offset         = MTDPART_OFS_APPEND,
  66                 .size           = SZ_2M,
  67                 .mask_flags     = 0
  68         },
  69         /* file system */
  70         {
  71                 .name           = "filesystem",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = MTDPART_SIZ_FULL,
  74                 .mask_flags     = 0
  75         }
  76 };
  77
  78 static struct flash_platform_data sdp2430_flash_data = {
  79         .map_name       = "cfi_probe",
  80         .width          = 2,
  81         .parts          = sdp2430_partitions,
  82         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  83 };
  84
  85 static struct resource sdp2430_flash_resource = {
  86         .start          = SDP2430_CS0_BASE,
  87         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  88         .flags          = IORESOURCE_MEM,
  89 };
  90
  91 static struct platform_device sdp2430_flash_device = {
  92         .name           = "omapflash",
  93         .id             = 0,
  94         .dev = {
  95                 .platform_data  = &sdp2430_flash_data,
  96         },
  97         .num_resources  = 1,
  98         .resource       = &sdp2430_flash_resource,
  99 };
 100
 101 static struct resource sdp2430_smc91x_resources[] = {
 102         [0] = {
 103                 .start  = SDP2430_CS0_BASE,
 104                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 105                 .flags  = IORESOURCE_MEM,
 106         },
 107         [1] = {
 108                 .start  = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 109                 .end    = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 110                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 111         },
 112 };
 113
 114 static struct platform_device sdp2430_smc91x_device = {
 115         .name           = "smc91x",
 116         .id             = -1,
 117         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 118         .resource       = sdp2430_smc91x_resources,
 119 };
 120
 121 static struct platform_device *sdp2430_devices[] __initdata = {
 122         &sdp2430_smc91x_device,
 123         &sdp2430_flash_device,
 124 };
 125
 126 static inline void __init sdp2430_init_smc91x(void)
 127 {
 128         int eth_cs;
 129         unsigned long cs_mem_base;
 130         unsigned int rate;
 131         struct clk *gpmc_fck;
 132
 133         eth_cs = SDP2430_SMC91X_CS;
 134
 135         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 136         if (IS_ERR(gpmc_fck)) {
 137                 WARN_ON(1);
 138                 return;
 139         }
 140
 141         clk_enable(gpmc_fck);
 142         rate = clk_get_rate(gpmc_fck);
 143
 144         /* Make sure CS1 timings are correct, for 2430 always muxed */
 145         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 146
 147         if (rate >= 160000000) {
 148                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 149                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 153         } else if (rate >= 130000000) {
 154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 155                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 159         } else { /* rate = 100000000 */
 160                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 161                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 162                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 163                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 164                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 165         }
 166
 167         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 168                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 169                 goto out;
 170         }
 171
 172         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 173         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 174         udelay(100);
 175
 176         if (gpio_request(SDP2430_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 177                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 178                         SDP2430_ETHR_GPIO_IRQ);
 179                 gpmc_cs_free(eth_cs);
 180                 goto out;
 181         }
 182         gpio_direction_input(SDP2430_ETHR_GPIO_IRQ);
 183
 184 out:
 185         clk_disable(gpmc_fck);
 186         clk_put(gpmc_fck);
 187 }
 188
 189 static void __init omap_2430sdp_init_irq(void)
 190 {
 191         omap2_init_common_hw();
 192         omap_init_irq();
 193         omap_gpio_init();
 194         sdp2430_init_smc91x();
 195 }
 196
 197 static struct omap_uart_config sdp2430_uart_config __initdata = {
 198         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 199 };
 200
 201 static struct omap_board_config_kernel sdp2430_config[] = {
 202         {OMAP_TAG_UART, &sdp2430_uart_config},
 203 };
 204
 205
 206 static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
 207         .gpio_base      = OMAP_MAX_GPIO_LINES,
 208         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 209         .irq_end        = TWL4030_GPIO_IRQ_END,
 210 };
 211
 212 static struct twl4030_platform_data sdp2430_twldata = {
 213         .irq_base       = TWL4030_IRQ_BASE,
 214         .irq_end        = TWL4030_IRQ_END,
 215
 216         /* platform_data for children goes here */
 217         .gpio           = &sdp2430_gpio_data,
 218 };
 219
 220 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
 221         {
 222                 I2C_BOARD_INFO("twl4030", 0x48),
 223                 .flags = I2C_CLIENT_WAKE,
 224                 .irq = INT_24XX_SYS_NIRQ,
 225                 .platform_data = &sdp2430_twldata,
 226         },
 227 };
 228
 229 static int __init omap2430_i2c_init(void)
 230 {
 231         omap_register_i2c_bus(1, 400, NULL, 0);
 232         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
 233                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
 234         return 0;
 235 }
 236
 237 static struct twl4030_hsmmc_info mmc[] __initdata = {
 238         {
 239                 .mmc            = 1,
 240                 .wires          = 4,
 241                 .gpio_cd        = -EINVAL,
 242                 .gpio_wp        = -EINVAL,
 243                 .ext_clock      = 1,
 244         },
 245         {}      /* Terminator */
 246 };
 247
 248 static void __init omap_2430sdp_init(void)
 249 {
 250         omap2430_i2c_init();
 251
 252         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 253         omap_board_config = sdp2430_config;
 254         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 255         omap_serial_init();
 256         twl4030_mmc_init(mmc);
 257 }
 258
 259 static void __init omap_2430sdp_map_io(void)
 260 {
 261         omap2_set_globals_243x();
 262         omap2_map_common_io();
 263 }
 264
 265 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 266         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 267         .phys_io        = 0x48000000,
 268         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 269         .boot_params    = 0x80000100,
 270         .map_io         = omap_2430sdp_map_io,
 271         .init_irq       = omap_2430sdp_init_irq,
 272         .init_machine   = omap_2430sdp_init,
 273         .timer          = &omap_timer,
 274 MACHINE_END